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The GPO was the General Post Office (https://en.wikipedia.org/wiki/General_Post_Office https://en.wikipedia.org/wiki/General_Post_Office) which by the 1940s dea
by pm215 7y ago
The GPO was the General Post Office (https://en.wikipedia.org/wiki/General_Post_Office https://en.wikipedia.org/wiki/General_Post_Office) which by the 1940s dealt not only with snailmail but also telegraph and telephones. GPO engineers built the Colossus computer at Bletchley.